1. Department of Chemical and Petroleum Engineering, University of Calgary, Calgary, Canada
2. School of Petroleum Engineering, China University of Petroleum-Beijing, Beijing, China
3. School of Petroleum Engineering, Xi’an Shiyou University, Xi’an, China
4. Engineering Research Center of Development and Management for Low to Extra-Low Permeability Oil & Gas Reservoirs in West China, Ministry of Education, Xi’an, China